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Read articles →This is a hands-on shop repair walkthrough on a John Deere 4640 with 7,700 hours, showing actual belt replacement from disassembly to tensioning, including how to work belts around the fan and through the hydraulic pump/crankshaft couplers. Along the way it covers related wear checks: water pump play, pulley grooves, crankshaft dampener condition, air compressor pulley, and pump coupler bushings. Good for owners doing this job themselves.
Posted by a self-described farmer (not a mechanic) sharing tips learned from years of hands-on repair work on these tractors, launching a new shop-repair series.